Cloth board or similar article



Feb. 14, 1928. 1,659,282

G. B. scHEr-FEY CLOTH BOARD OR SIMILAR ARTICLE Filed June 15, 1925 INVENTOR Patented Feb. 1:4, 1928.

v 1,659,214; UNITED STATES `Parizla'r oFFicE',

GEORGE B. SCHEFFEY, F ROANOKE R'APIDS, NORTH CAROLINA, 'ASSIGNOB T0 LICHT- SHIP BOARD COMPANY, INC., 0F WEEHAWKEN, NEW. JERSEY, A. CORPORATION Ol' NEW JERSEY.

CLOTH BOARD OR SIMILAR ARTICLE.

Application mea :une 15, 1925. serial no. 87,127.

This invention relates to cloth boards or.

similar articles, generally used as centers upon which differentN fabrics are wound to form the fabric bolts of commerce.

5 The principal object of the invention is to produce a very light, strong, and rigid cloth board composed of fibrous sheet material, suchy as vpulp or straw board. The manufacture and handling ,of these' light "cloth boards produces great saving on three principalv accounts: y

(l). The material is relatively inexpensive.

(2). The material and design or structure of the boards are such that they may be rapidly and cheaply produced by what I call continuous methods of manufacture, with the aid of automatic machinery, so that hand work is eliminated' or reduced to a very small factor.

(3). The boards are of very light Weight and shipping costs are therefore reduced both in shipments to and from the textile' mills.

In order to produce a board of substantial thickness and of light Weight, I provide a core or iiller, which, in preferred cases, is of ribbed or corrugated sheet material of the character mentioned, namely, straw board or pulp board, and preferably this filler is of laminated or multiple construction, since it has been found by study and experimentthat the multiple corrugated filler is relatively strong and stiffer than single d ply filler of similar form and the same thickness. This is due, not only tothe mutually reinforcing action of the separate plies, but to adhesive which may inv preferred cases be used to 'secure the plies or layers together, and which serves to effectively retain the plies in contact and also acts as a structural reinforcement to very substantially strengthen and stiffen the corrugated filler structure. This filler is en'- closed in a concealing, protecting and reinforcing sheath or envelope, which preferably, is a sheet of pulp board of substantial thickness, stifness and tensile strength, folded about and adhesively secured to the broad faces and longitudinal edges of the filler and preferably, with an overlapping margin adhesively secured. The longitudinal edges or corners of the completed board are smoothly rounded to avoid any sharp surfaces which might injure fabrics. The board is completed by applying sheets of sultable material, such as paper, to the ends, 1n such a Way at end margins of the longitudlnal edges and main faces of the board and of the envelope are concealed, and smooth surfaces of the end coverings also overlie the narrow board ends and entirely conceal thepiller, and also provide a usuitable surface forl the application of a label.

`Desirably, in some cases, a stifening end piece, which may be ofpulp board simllsar. to

the envelope material, is overlies the end of the boar the end covering is applied.

The structure is so arranged, as will sufliciently' appear, below-that the principal component materials may be handled in continuous form and by continuous production methods; that is, the sheets composing the filler may be advanced in continuous web form from rolls, adhesively coated, brought together, corrugated, and further advanced in contlnuous form; the sheet material composing the envelope may be advanced in contlnuous web form from a Iroll, adhesively coated, brought in contact with the continuous filler, folded and secured around it to form a. continuous assembly, and this is then severed transversely at regular intervals to produce the individual boards, which are complete, except for the end reinforcements and coverings, which maybe applied by machine or hand operations.

(provided, which The characteristics and advantages of the I invention are further sutliciently explained in connection with detailed description of the accompanying drawing,wl1ich showsone exemplifying embodiment of the invention. After considering this embodiment, persons skilled in the art will understand that many and over whichv variations may be made-Within the principles of the invention, and I contemplate the employment of any structures that are properly Within the scope of the appended claim. claim.

Fig. 1 is a perspective view of a complete cloth board embodying the invention in one form.

Fig. 2 is a longitudinal section, enlarged, in the plane 2 2, Fig. 1.

Fig. 3 is a transverse section at 3 3, Fig. l.

Fig. 4 is al fragmentary perspective view showing the filler and envelope materials in partly assembled form.

Fig. 5 is a section in a longitudinal plane of the board showing the multiple filler structure. f

The cloth board B, Fig. 1, is principally composed of a laminated, corrugated filler C, and an envelope E, Fig. 2. Both these main parts are usually made of material roughl designated as paper and preferably, t ey are of the class o f fibrous sheet material known i'n the trade as straw board or pulp board. Specifically, in one preferred embodiment, the filler C, F 1g. 5, consists of a plurality, specifically in this case, two, layers, of which 1 is a sheet of pulpV board and 2 a sheet of straw board secured together by interposed adhesive. Both these sheets may be of quite moderate thickness and one may be thicker than the other, for example, in this particulaor case, the pulp board 1 is thicker than the straw board 2. In the continuous process of manufacture, these sheets are advanced in continuous web form and adhesive is applied to at least one surface of one of the webs; the webs are then brought together and are pressed between one or more pairs of corrugating rolls having relatively deep ribs or corrugatioris and properly heated to produce and set the corrugations in the combined materials. The drawing clearly shows that these corrugations are very much deeper than those of ordinary corrugated board, since it has been found, by the prescribed method of production, a single multipl layer of corrugated material may be ma e thick enough to properly space the portions of the en velope which form the main board surfaces, or in brief, a board of sufficient thickness may be produced without necessity for a plurality of superposed independent layers of corrugated material.

The multi 1e corrugated web is further advanced, an the sheet 4 of envelo material is advanced in continuous web orm, adhesively coated on one. face, brought in contact with the filler in a fashion suiciently indicated in Fig. 4, and folded and secured with an overlapping, marginal portion 5, Figs. 1 and 3. This envelope is of suitable fibrous sheet material, preferably pulp board of quite substantial thickness, stilf ness, and tensile strength, and in preferred cases is substantially thicker than either sheet of filler material. In the assembly operation the envelope is pressed firmly in contact with the crests of the filler corrugations, and preferably, this pressure is sufficient to substantially flatten these crests, roducing fiat areas 6, which afford increase areas of the ller material in adhesiveV connection with the envelope. This materially strengthens and reinforces the structure in an obvious way. `The edges of the assembly are also suitably pressed or formed so that the lon-.-

gitudinal walls 7 are smoothly formed and preferably, convexly rounded, and the corners 8 are also smoothly rounded in order to avoid any sharp surfaces which would injure fabrics wound upon the board.

While it is unnecessary in some cases to adhesively coat the entire inner surface of the envelope, and adhesive might otherwise be ap lied to the crests of the corrugations to aifor sufficient adhesive connection between the filler and the envelope, for manufacturing convenience, it is usually preferred to coat the entire inner surface of the envelope, as suiiiciently indicated in Fig. 4, andA when this is done, 'the adhesive materially strengthens and reinforces the envelope and the entire structure, in 'addition to the strength and stillness afforded by the adhesive connection of the envelope to the flat crests 6 of the corrugations.

The combined materials are now severed transversely at regular intervals to produce the individual cloth boards B, which are complete, as shown in Fig. l, except for. end reinforcements and end coverin which are applied to the boards by` machinery or hand operation.

The broad faces of the envelope material are very strongly supported by the filler corrugations at all points except certain points at the board ends. For example, at 10, Fig. 2, a short portion of one of the main envelope faces overhangs the adjacent point of support on one of the filler corru'ations and this portion might become cruslied or bent downwardly in subsequent handling. To prevent such damage, and also to provide a suitable smooth surface for the paper end covers, it is usually preferred to apply to the board ends, end pieces 12 which are usually pulp board of the same thickness as the envelope and cut in conformity with the board end contour, and suliicie'ntly wide to overlap the end edges of the envelope, as clearl shown in Fig. 2. These may be adhesive y secured or in some cases may be retained b the end cover paper.

The endI coverings 15, while usually of paper of suitable grade and finish to rovide an attractive appearance, might be o fabric or other suitable material. These sheets are adhesively coated and folded and secured to the board ends in an obvious way, with portions overlying the end margins of the broad facesand longitudinal edges of the cover sheet, and with smooth portions 16 overlying the outer faces of the end reinforcements 12. These surfaces 16 alford a suitable base for the adhesive application of labels to designate the grade or character of fabric wound upon the board at the textile mill.

This board is very light, weighing in a standard size only a very few ounces, and

is at the same time very strong and rigid and resistant to strains in any direction, including longitudinal and transverse bending and torsional or twisting strain. rlhis strength is due to the bridge or truss-like character of the corrugated liller, to the large areas of the flattened filler crests adhesively secured to the envelope, to the laminated or multi-ply construction of the liller, and to the adhesive connection of the plies when adhesive is used for this purpose, and to the mutual action of the filler and envelope of substantial thickness, stillness and tensile strength. The envelope, firmly connected to the filler at a multiplicity of points,

. serves to distribute throughout practically the entire structure any strain which 1s brought upon it. The entire outer surface of the board is smooth and irm and will receive and hold, without injury, anyfabric that may be wound uponit.

I claim:

A relatively thin cloth board including a core composed of a single sheet of laminated material, with the lamina adhesively connected,' and with the core corrugated, the corrugations extending transverse to the board, and an envelope of relatively stout fibrous sheet material folded about the board abutting the ends of the corrugations at the longitudinal edges of the board and adhesively secured directly to the crests of the corrugations at the opposite faces of the board, the ends of the board being bound.

Signed at New York city in the county of New York and State of New York this 17th day of February A. D. 1925.

GEORGE B. SCHEFFEY. 

